An Independent variable is a variable that changes or is controlled during an experiment, so according to this information your correct answer will be A) the coconut juice.
They all have different compositions of protons, neutrons, and electrons. This causes variety and makes atoms different so they can make up different substances
The first one is the 3rd option and the 2nd one is also the 3rd option
The fertilizers used by farmers can have negative effects on aquatic ecosystems because there is every possibility that the runoffs from the fields can create an algal bloom in the nearby water body. This algal bloom can have a very negative effect on the living organisms of the aquatic body. I hope it helps.
The answer is b)
The niche is the job the animal does in it's habitat to contribute to the habitat.
